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Metatarsal Head Mean Alignment
What it Measures
The angle of the mean plantar met heads relative to the AAA line while the heel is held in AAA and the tensile structures of the foot are in equilibrium.
Significance
- Moderate
- High significance once the varus or valgus angle is 20° or more
Normal Value
- 2-4° varus
Exam containing this measurement:
|
|
BIQ 24 |
|
|
BIQ 10 |
Hide/show animation
About
The Metatarsal Mean Head alignment reveals the natural positioning and orientation of the joints and soft tissue in the midfoot. The midfoot is responsible for redistributing the forces running through the foot from walking and the ground. If there are possible problems with the limb higher-up say in the subtalar joint or the Achilles, signs of pathology can be visible through the compensating reorientation and repositioning of the metatarsal heads. The metatarsal heads serve as a great marker for indicating the equilibrium and position of stability of the foot.
Effect of Deviation
A larger angle will limit the efficiency of the foot and rely on tensile loading tissues (muscle and tendon) to stabilize the body. A smaller angle will stabilize the body relying on osseous tissue. Position of the met heads and ability to stabilize the body are mechanically coupled with the mid and hind foot mechanics.
Metatarsal Head Mean Alignment
What it Measures
The angle of the mean plantar met heads relative to the AAA line while the heel is held in AAA and the tensile structures of the foot are in equilibrium.
Significance
- Moderate
- High significance once the varus or valgus angle is 20° or more
Normal Value
- 2-4° varus
Exam containing this measurement:
|
|
BIQ 24 |
|
|
BIQ 10 |
Hide/show animation
About
The Metatarsal Mean Head alignment reveals the natural positioning and orientation of the joints and soft tissue in the midfoot. The midfoot is responsible for redistributing the forces running through the foot from walking and the ground. If there are possible problems with the limb higher-up say in the subtalar joint or the Achilles, signs of pathology can be visible through the compensating reorientation and repositioning of the metatarsal heads. The metatarsal heads serve as a great marker for indicating the equilibrium and position of stability of the foot.
Effect of Deviation
A larger angle will limit the efficiency of the foot and rely on tensile loading tissues (muscle and tendon) to stabilize the body. A smaller angle will stabilize the body relying on osseous tissue. Position of the met heads and ability to stabilize the body are mechanically coupled with the mid and hind foot mechanics.
Metatarsal Head Mean Alignment
What it Measures
The angle of the mean plantar met heads relative to the AAA line while the heel is held in AAA and the tensile structures of the foot are in equilibrium.
Significance
- Moderate
- High significance once the varus or valgus angle is 20° or more
Normal Value
- 2-4° varus
Hide/show illustrations
Exam containing this measurement:
|
|
BIQ 24 |
|
|
BIQ 10 |
About
The Metatarsal Mean Head alignment reveals the natural positioning and orientation of the joints and soft tissue in the midfoot. The midfoot is responsible for redistributing the forces running through the foot from walking and the ground. If there are possible problems with the limb higher-up say in the subtalar joint or the Achilles, signs of pathology can be visible through the compensating reorientation and repositioning of the metatarsal heads. The metatarsal heads serve as a great marker for indicating the equilibrium and position of stability of the foot.
Effect of Deviation
A larger angle will limit the efficiency of the foot and rely on tensile loading tissues (muscle and tendon) to stabilize the body. A smaller angle will stabilize the body relying on osseous tissue. Position of the met heads and ability to stabilize the body are mechanically coupled with the mid and hind foot mechanics.